Question

distilled water leaves etching on surface of glass

Answer 1

Hey
Here's your answer!!

Water has a high dielectric constant. As a result, it reduces the electrostatic force of attraction between positive and negative ions and dissolves even inorganic compounds, which are usually electrovalent. Not only solids, but also gases and other liquids dissolve in water. So it is a universal solvent.

Substances that are apparently insoluble in water actually dissolve in it in traces. Even when we put water in a glass vessel, an extremely small amount of glass, an extremely small amount of glass vessel dissolves in it.

It is for this reason that, when distilled water is kept in a sealed bottle for a long time, it leaves etchings on the inside surface of the glass.

Hope it helps!!